A reaction was found to be third order in A. Increasing the concentration of A by a factor of 3 will cause the reaction rate to . A reaction was found to be third order in A. Increasing the concentration of A by a factor of 3 will cause the reaction rate to . increase by a factor of 9 triple remain constant increase by a factor of 27 decrease by a factor of the cube root of 3

i'm pretty sure its b i might be wrong though!

the answer would be a

4d^55s^1 ( third choice)

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.